Tree ladder



FIG. 1 shows a perspective view of a tree ladder;

FIG. 2 shows a front view of the tree ladder;

FIG. 3 shows a rear view of the tree ladder;

FIG. 4 shows a left side view of the tree ladder;

FIG. 5 shows a right side view of the tree ladder;

FIG. 6 shows a top plan view of the tree ladder; and,

FIG. 7 shows a bottom plan view of the tree ladder.

The tree ladder is shown with symbolic breaks in its length. Theappearance of any portion of the article between the break lines formsno part of the claimed design.

CLAIM The ornamental design for a tree ladder, as shown and described.